DECAYED

OBJECT XH, 65729 (Decayed)

Orbit data source: Space-Track

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Recently launched and/or uncataloged satellites may have evolving metadata. Metadata may include but not limited to: Owner, Maufacturer, Bus, Motor, and Mission.

OBJECT XH, 65729 was a satellite owned by Kyutech (JP) in LEO that was delivered to and deployed from the ISS. Unknown objects in Earth's orbit typically refer to objects detected orbiting the Earth but have not yet been identified or cataloged. These objects could be anything from previously untracked satellites, spent rocket stages, debris from satellite collisions, or even natural meteoroids temporarily captured by Earth's gravity. This object's orbit decayed before it could be identified.

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<iframe src="https://www.satcat.com/sats-embedded/65729?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/65729?theme=dark&initialShowStats=false

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Identifier

65729, 1998-067XH

Orbit

Decayed

Country

JP / JPN

Related business

Kyushu Institute of Technology, Cent. Nanosatellite Testing, Tobata Campus (JP)

Manufacturer

Kyutech

Mission

Decayed Amateur Technology

Bus & Motor

CUBESAT 2U, Unknown motor

Mass

2 kg wet, 2 kg dry

Launch date (UTC)

1998-11-20 (27 years ago)

Launch vehicle

FALCON 9

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Unknown

Shape & HBR

Box, 0.1 m

Radar Cross Section

0.025 m²

Expand to show TLE details & history
Last TLE update: 1 week ago

TLE from 1 week ago

0 OBJECT XH
1 65729U 98067XH  26031.05194254  .08662331  12285-4  96629-3 0  9997
2 65729  51.6000 237.6139 0006569 265.0285  94.9990 16.36242872 20999

Epoch: 2026-01-31T01:14Z

TLE epoch observation values (Epoch: 2026-01-31T01:14:47.835Z)

Latitude

-0.00001°

Longitude

88.6331°

Altitude

176.958 km

Speed

7.801 km/s

True Right ascension

15h 50m 27s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

02:30:33

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

180.655 km

Perigee altitude

172.044 km

Semi-major axis

6,554.486 km

Eccentricity

0.00066

Inclination

51.6°

RAAN

237.6139°

Arg. of periapsis

265.0285°

True anomaly

95.07398°

Mean anomaly

94.999°

Eccentric anomaly

95.03649°

Mean motion

4.09011 °/min

Orbital period

88.02 mins

BSTAR

0.00096629

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Other satellites on launch #67 in the year 1998 (1998-11-20 UTC)

FLOCK 2E 5, 41564 (Decayed)

ARDUSAT 1, 39412 (Decayed)

OBJECT XW, 66910

ISS DEB, 28386 (Decayed)

HRC MONOBLOCK CAMERA, 66052

ISS DEB, 44306 (Decayed)

ISS DEB, 28792 (Decayed)

EXALTA-1, 42734 (Decayed)

FREEDOM, 41930 (Decayed)

ISS DEB, 28411 (Decayed)

FLOCK 2E 2, 41484 (Decayed)

ISS DEB, 26943 (Decayed)

OBJECT XY, 66912

DAILI, 51443 (Decayed)

FLOCK 2E 8, 41566 (Decayed)

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OBJECT XH Visibility

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Span	Click to sort rows by Start time (UTC) header in descending order	Start Az.	Max El. time (UTC)	Max El. Az.	Max El.	End time (UTC)	End Az.
This satellite is decayed.

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out OBJECT XH, 65729 (Decayed) on other resources

View OBJECT XH, 65729 (Decayed) on Celestrak

View OBJECT XH, 65729 (Decayed) on Gunter's Space Page

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OBJECT XH, 65729 (Decayed)

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 week ago

TLE from 1 week ago

TLE epoch observation values (Epoch: 2026-01-31T01:14:47.835Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #67 in the year 1998 (1998-11-20 UTC)

OBJECT XH Visibility

Co-orbital & Co-planar RSOs

Check out OBJECT XH, 65729 (Decayed) on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 week ago